I bought my 06 off road in April 2006. I worked out of town for until 2008 so it didn't get much mileage on it. I now have 43500 since I am now retired and drive it a lot more. Noticed that the fuel economy, If you can call it that in an Xterra, has gone down lately. I am going to run some injector cleaner through it this week and see if that helps.

I bought my 06 off road in April 2006. I worked out of town for until 2008 so it didn't get much mileage on it. I now have 43500 since I am now retired and drive it a lot more. Noticed that the fuel economy, If you can call it that in an Xterra, has gone down lately. I am going to run some injector cleaner through it this week and see if that helps.

Your plugs might be getting a bit long in the tooth, and, MAF cleaner might be a good idea too.

Its also possible that you need to change some lubes other than engine oil, like in the diffs, etc.

May 1999 Xterra XE Automatic 181,xxx miles. Just replaced a starter (original)last month. Other than normal maintenance and valve cover gaskets, no major failures. I do have a hole in the passenger side rocker panel from a meeting with a rock years ago and a couple of bubbles of rust on the passenger side rear wheelwell and one on the hatch. Just drove it 3100 miles to Moab to camp and wheel for a week. It always has been under powered in my opinion but this time across Vail Pass on Route 70 was 40 mph... and I was not even towing my camper. Looking at one of the new Pro models...

'03' with 150K. Brand new (to me) runs great, but a small oil leak that fouls the starter motor. The mechanic says he fixed the oil leak, but there are still a few tiny spots on the cement. I like this car a lot, but the stereo is for modern younger technologist, not old men. But I'm figuring it out.

2003 X here bought with 74K on it in '06. Went to 196,000 (over 10 years) before it was rear ended by a tractor trailer at 20mph and totaled. Had just put fresh tires on it at 195,850!! I'm sure it would have gone the distance. RIP ONYX